Document Detail


Color perception within a chromatic context: the effect of short-wavelength light on color appearance.
MedLine Citation:
PMID:  8160371     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Light at the boundary of a uniform test field (contrast) has a qualitatively different effect on color perception than light in more remote noncontiguous regions (context). Basic properties of color perception with contextual short-wavelength light are assessed here with a 1 degree test field surrounded by either contiguous or noncontiguous 440 or 491 nm light (32 td). Contrasting stimuli are 3 or 5 degrees adapting fields, a thin 1 degree i.d.-2 degrees o.d. (0.5 degree wide) contiguous band, or a large 1 degree i.d.-5 degrees o.d. contiguous surround. Contextual stimuli are a remote 3 degrees i.d.-5 degrees o.d. ring or 0.5 degree wide noncontiguous bands at various distances from the edge of the 1 degree test field (2 degrees i.d.-3 degrees o.d., 3 degrees i.d.-4 degrees o.d., or 4 degrees i.d.-5 degrees o.d. bands). Contiguous surrounds have little influence on color appearance, but remote noncontiguous short-wavelength light strong affects the color of the test field, shifting it toward redness. The shift toward redness increases as a thin 440 nm band is moved farther from the test field (up to 5 degrees), unlike the effect of distance on remote middle- and long-wavelength bands. Measurements comparing the effects of 440 nm and luminance-equated 491 nm light indicate a contribution from S cones.
Authors:
M F Wesner; S K Shevell
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  34     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1994 Feb 
Date Detail:
Created Date:  1994-05-18     Completed Date:  1994-05-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  359-65     Citation Subset:  IM    
Affiliation:
Department of Psychology, Lakehead University, Thunder Bay, Ontario, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Color
Color Perception / physiology*
Contrast Sensitivity / physiology
Dark Adaptation
Humans
Light*
Photoreceptor Cells / physiology
Grant Support
ID/Acronym/Agency:
EY-04802/EY/NEI NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Movement aftereffect of bi-vectorial transparent motion.
Next Document:  Individual differences in cone photopigments of normal trichromats measured by dual Rayleigh-type co...